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(No Model.)

H. M. & 0. E. MOORE.

COMBINED BURGLAR ALARM AND DOOR SEOURER.

Patented July 3, 1883.

mENWR:

ATTORNEYS.

UNITED STATES PATENT OFFICE.

HIRAM M. MOORE AND CHARLES E. MOORE, OF NEW YORK, N. Y.

COMBINED BURGLAR-ALARM AND DOOR-SECURER.

SPECIFICATION forming part of Letters Patent No. 280,501, dated July 3,1883.

Application filed April 25, 1883. (No model.)

To all whom it may concern Be it known that we, HIRAM MORTON MOORE andCHARLES ELMER MOORE, both of the city, county, and State of New York,have invented a new and useful Improvement in Combined Door-Stop andBurglar-Alarm, of which the following is afull, clear, and exactdescription.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a perspective View of our improvement, shown as applied to adoor. Fig. 2 is a plan View of the improvement, the gong being removed.Fig. 3 is a side elevation of the same, partly in section, and showingthe door in edge View.

The object of this invention is to provide a simple and convenient meansfor fastening doors securely, and which will give an alarm should anattempt be. made to open the said doors.

The invention consists in a combined doorstop and burglar-alarm,constructed with a bar recessed at its upper end to receive the shank ofa door-knob, and provided with a groove to receive a sliding bar havinga push-rod connected with its lower end to disengage a hook connected byan elbow-lever with a spring and a bell-hammer, and allow the saidspring to swing the said hammer against the bell and sound an alarm, aswill be hereinafter fully described.

A represents a bar, of wood or other suita ble material, of such alength as to stand at an angle of about forty-five degrees when itslower end is placed upon the floor and its upper end beneath the knob ofa door. The upper end of the bar A is recessed to receive the shank ofthe door-knob, and in the upper side of the said upper end is formed agroove, B, to receive a bar, O, which is kept in place in the saidgroove by a plate, D, attached to the said bar A.

To the lower part of the bar 0 is hinged the'upper end of a rod, E,which is curved, passed through a staple or other guide, F, attached tothe said bar A, and has its end bent upward at right angles to restagainst the shank of the hook G when the said hook is hooked around apin or screw, H, attached to the bar A. The shank of the hook G ishinged to the arm of an elbow-lever, I, which is piV- oted at its angleto the stand of a gong, J, attached to thebar A. The other arm of theelbow-lever I is connected with a spring, K, also attached to the bar A.\Vith the elbow lever I is connected the bell-hammer L.

Upon the rear side of the lower part of the 1 shank of the hook G isplaced a pin, M, to prevent the said hook from being pushed too easilyoff the pin H, and which serves as a fulcrum to cause the hook G, whilebeing pushed off the pin H, to act as a lever in putting the spring Kunder an increased tension.

In using the improvement the recessed upper end of the bar A is placedagainst the shank of the door-knob and its lower end is placed upon thefloor. The sliding bar 0 is drawn upward to rest against the shank ofthe doorknob, and the hook G is hooked upon the pin H, so that thesliding bar 0 will be held up by the end of the rod E resting againstthe said hook.

With this construction, should an attempt be made to open the door, thepressure will force the sliding bar 0 downward, pushing the hook G offthe pin H, and allowing the hammer L to be swung against the gong J bythe action of the spring K.

\Ve are aware that a burglar-alarm sounded by pressure against aretractile frame connected with an alarm detent and attached alarmmechanism is not new; also, that a case has been secured by bottomflanges to and made movable on a support provided with a stud passingthrough the case, the escapement being held until the case is pressed bythe door; but

\Vhat we do claim as new and of our inven- 0 tion is In a door-stop andburglar-alarm, the combination, with a recessed and grooved bar, A, andthe bell-hammer and spring L K, of the sliding bar O, the push-rod E,the hook G, and the elbow-lever I, substantially as herein shown anddescribed, whereby a slight inward movement of the said sliding bar willrelease the bell-hammer spring and sound an alarm, as set forth.

HIRAM MORTON MOORE. CHARLES ELMER MOORE.

NVitnesses:

JAMES T. GRAHAM, O. Snnewrcn.

